/*
 * Copyright (C) 2013 douzy (@kissdarkwind)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdio.h>
#include <unistd.h>

int main() {
    pid_t pid = getpid();
    printf("now the main pid is %d\n", pid);

    pid_t opid;
    opid = fork();

    if (opid < 0) {
        printf("something error!\n");
    } else if (opid == 0) {
        printf("I am the child process! and res is : %d\n", opid);
    } else {
        printf("I am the parent process! and res is : %d\n", opid);
    }

    printf("Who print me ?!\n");

    return 0;
}
